Improvement in fire-proof floors



UNITE-n5 STATES JOHN W. HOYT, OF SPRINGFIELD, MASSACHUSETTS.

IMPROVEMENT IN FIRE-PROOF FLOORS.

Specification forming part of Letters Patent No. 173,470, dated February15, 1876; application filed February 1, 1875.

To all whom it may concern:

Be it known that I, JOHN W. HOYT, of

Springfield, in the county of Hampden and In the accompanying sheet ofdrawings, Figure 1 is a longitudinal section of my floor;

and Fig. 2, a side view of same, partly in section.

Similar letters of reference indicate like parts in the two figures.

A A represent the beams of my flooring. These beams should be of iron,and may be of 7 any desired size and form but it is essential that theybe constructed with flanges a. a, or their equivalents, on their loweredges. Secured to these flanges or otherwise, in any suitable manner,are metallic furrings B B.

These furrings may be made from angle-iron,

or any other suitable form of iron, and they extend across from beam tobeam. On their under side, springing between each pair of beams, is

is affixed the iron' lathing D. This lathing may be secured in any waydesired, and it may be of any size and form and the arch C may be eitherof corrugated iron or flat iron, or ironrwith a smooth surface, since noclaim is made-on the particular form or construction of any of theparticular parts of the combination before referred to, the inventionconsisting only in the combination of those parts.

I am aware that fire-proof floors have been made with arches of metalresting on metal beams, and having tension-rods of interwoven wires,which serve the additional purpose of lathing for the ceiling below; butthis forms no part of my invention.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, in a fire-proof flooring, of beams A, having flanges a,metallic furrings B, extending transversely from beam to beam, metallicarches G, springing between said beams, and metallic lathing D, attachedto the furrings, all constructed and arranged substantially as shown anddescribed.

JOHN W. HOYT.

Witnesses:

H. L. WATTENBERG, G. M. PLYMPTON.

PATENT; Or'FIo'E.

